on principle in Polish:

1. dla zasady

Polish word "on principle"(dla zasady) occurs in sets:

Phrases with ON - 2.14
Kartkówka angielski
01.2018 (4) part 1
expression 10
Kurs - zeszyt 2

2. z zasady

Polish word "on principle"(z zasady) occurs in sets:

Magda - preposition
ver+ preposition
office english

3. na zasadzie

Polish word "on principle"(na zasadzie) occurs in sets:

angielski kartkowka 3 kl